undulate
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verb
To move or cause to move with a smooth, wave-like motion.
"The long grass began to undulate in the gentle breeze."
Thesaurus
Synonyms: smooth, roll, wave, flap, ruffle, riffle, ripple, cockle
un-du-late
To move or cause to move with a smooth, wave-like motion.
"The long grass began to undulate in the gentle breeze."
Synonyms: smooth, roll, wave, flap, ruffle, riffle, ripple, cockle